<script setup>
import { getCategoryFilterAPI,getSubCategoryAPI } from '@/apis/category'
import { onMounted } from 'vue';
import { ref } from 'vue'
import { useRoute } from 'vue-router'
import GoodsItem from '../home/goodsItem.vue';
const route = useRoute()
//实际上是分类二级数据
const categoryData = ref({})

const getCategoryData=async(id)=>{
  const res = await getCategoryFilterAPI(id)
  categoryData.value = res.result
}

onMounted(()=>{
  getCategoryData(route.params.id)
})

//二级分类商品列表
const goodList = ref([])


const reqData = ref({
  categoryId: route.params.id,
  page: 1,
  pageSize: 20,
  sortField:'publishTime'
})

const getGoodList=async()=>{
  const res = await getSubCategoryAPI(reqData.value)
  goodList.value = res.result.items
}

onMounted(()=>{
  getGoodList()
})

const tabChange = () => {
  reqData.value.page=1
  getGoodList()
}

const disabled = ref(false)

const load = async() => {
  reqData.value.page++
  //拼接新老数据
  const res = await getSubCategoryAPI(reqData.value)
  goodList.value = [...goodList.value, ...res.result.items]
  //如果到底部了就停止监听
  if (res.result.items.length === 0) {
    disabled.value = true
  }
}

</script>

<template>
  <div class="container ">
    <!-- 面包屑 -->
    <div class="bread-container">
      <el-breadcrumb separator=">">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item :to="{ path: `/category/${categoryData.parentId}` }">{{ categoryData.parentName }}
        </el-breadcrumb-item>
        <el-breadcrumb-item>{{ categoryData.name }}</el-breadcrumb-item>
      </el-breadcrumb>
    </div>

    <!-- 标签切换 -->
    <div class="sub-container" >
      <el-tabs v-model="reqData.sortField" @tab-click="tabChange()">
        <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>
        <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>
        <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>
      </el-tabs>
      <div class="body" v-infinite-scroll="load" :infinite-disabled="disabled" >
         <!-- 商品列表  在上面搞一个到底部的函数 实现无限加载-->
          <GoodsItem v-for="good in goodList" :good="good" :key="good.id" />
      </div>
    </div>
  </div>

</template>



<style lang="scss" scoped>
.bread-container {
  padding: 25px 0;
  color: #666;
}

.sub-container {
  padding: 20px 10px;
  background-color: #fff;

  .body {
    display: flex;
    flex-wrap: wrap;
    padding: 0 10px;
  }

  .goods-item {
    display: block;
    width: 220px;
    margin-right: 20px;
    padding: 20px 30px;
    text-align: center;

    img {
      width: 160px;
      height: 160px;
    }

    p {
      padding-top: 10px;
    }

    .name {
      font-size: 16px;
    }

    .desc {
      color: #999;
      height: 29px;
    }

    .price {
      color: $priceColor;
      font-size: 20px;
    }
  }

  .pagination-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
  }


}
</style>